My boyfriends sister is only 13. I can't stand her though. She constantly wants to hang all over me or her brother. She is spoiled and constantly begs for thing that she doesn't need. I know she is young but how do I tell her to back off of me. I struggle with depression and anxiety and some days I can't stand to be touch but when I make up an excuse like "Its to hot" or I tell her I have to get up to go to the bathroom she instantly crawls back to my side and clings. Then when I hold her brothers hand in public she grabs his other arm and gives me a dirty look. It's like she wants me to compete with her. Somebody help me!!! I need advice before I blow a gasket!!